. good evening. >> the obama administration's decision to shift the legal stance on gay marriage could have huge implications in the future if the courts accept the same view. federal agencies including the irs, would not be able to discriminate against same-sex couples. in maryland, same-sex marriages could be legal by october, but despite all of this day's developments, opponents aren't ready to give up. craig melvin is joining us with the latest. >> reporter: president obama ordered the justice department the stop defending the defense of marriage act, the law that banned same-sex marriage. meanwhile, as you mentioned today in maryland, it became apparent that lawmakers are more than likely going to legalize same-sex marriage as supporters celebrate, opponents say their celebrations could be premature. the defense of marriage act defined marriage as man and woman and denied federal beb fits to married, same-sex couples. president clinton signed the act in 1996. president obama said he ordered the justice department to stop defending it because he believes it is unconstitutional. >>